電流產生的磁場與電磁感應現象

📝 歷屆考古題

• 115年 hce_kmu 第9題
  Two long straight wires are mounted parallel to each other, with one wire directly above the other.…
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• 115年 hce_kmu 第12題
  An electromagnetic wave with a peak magnetic field magnitude of $1.5 \times 10^{-7} \text{ T}$ has a…
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• 115年 hce_kmu 第45題
  A long coaxial cable consists of a solid inner conductor of radius $a$ carrying current $I$ and a th…
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• 115年 hce_kmu 第46題
  A small AC generator is used to power motion sensors on a treadmill. The generator coil rotates in a…
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• 115年 hce_kmu 第51題
  A long solenoid has 5000 turns per meter and a cross-sectional area of $2.0 \times 10^{-4} \text{ m}^2$…
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• 115年 hce_kmu 第52題
  A wire is bent into a three-quarter circular loop of radius $R$ and carries a steady current $I$. It…
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• 115年 hce_kmu 第53題
  A circular coil 0.05 m in radius, with 50 turns of wire, lies on a horizontal plane. It carries a co…
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• 115年 hce_kmu 第56題
  A rectangular conducting loop with resistance $R$ lies in the same plane as a long straight wire car…
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• 114年 hce_kmu 第38題
  A technician wearing a brass bracelet enclosing area 0.005 m$^2$ places her hand in a solenoid whose…
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• 114年 hce_kmu 第43題
  A rectangular coil of $N$ turns, each of width $a$ and length $b$ is in a magnetic field $B$ directe…
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• 114年 hce_kmu 第49題
  One way to measure blood flow when blood vessels are exposed during surgery is to use an electromagn…
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• 114年 hce_kmu 第51題
  A proton of mass $m$ and charge $q$ is in uniform circular motion perpendicular to a magnetic field…
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• 114年 hce_kmu 第53題
  A square 10-turn coil with edge-length 50 cm carries a current of 2 A. It lies in the xy plane with…
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• 113年 hce_kmu 第6題
  Determine the force per unit length between two infinitely long parallel conducting wires carrying c…
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• 113年 hce_kmu 第43題
  A heart surgeon monitors the flow rate of blood through an artery using an electromagnetic flowmeter…
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• 113年 hce_kmu 第44題
  A rectangular coil with 1000 turns has a length and width of 10 cm and 20 cm respectively and carrie…
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• 113年 hce_kmu 第45題
  A rectangular conductor coil has width $L = 10\text{ cm}$, resistance $R = 0.3 \Omega$, and mass $m = 100\text{ g}$…
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• 113年 hce_kmu 第47題
  In a certain cyclotron a proton moves in a circle of radius 0.50 m. The magnitude of the magnetic fi…
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• 113年 hce_kmu 第59題
  How fast is needed for an $\text{O}_2^+$ ion to move in a circular orbit of radius 5 m in a magnetic…
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• 112年 hce_kmu 第5題
  The electric inductance $L$ is defined as the magnetic flux $\Phi_B$ divided by current $I$. What is…
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• 112年 hce_kmu 第12題
  Which equation is not one of Maxwell's equations?
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• 112年 hce_kmu 第50題
  Two long straight current-carrying parallel wires cross the $x$ axis and carry currents $I$ and $3I$…
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• 112年 hce_kmu 第52題
  A plane with a wing length of 50 m is flying westward where the downward component of the earth's ma…
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• 112年 hce_kmu 第53題
  Implanted medical devices are often charged by transcutaneous energy transfer (TET), which uses a pa…
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• 111年 hce_kmu 第10題
  The point P lies along the perpendicular bisector of the line connecting two long straight wires S a…
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• 111年 hce_kmu 第53題
  A 30-turn circular coil of radius $1\text{ m}$ and resistance $1\text{ }\Omega$ is placed in a magne…
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• 111年 hce_kmu 第54題
  Electric currents $I_1$ and $I_2$ are flowing through two parallel electric wires which are separate…
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• 111年 hce_kmu 第60題
  MRI machine probes the concentration distribution of water molecules by detecting the magnetic reson…
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• 110年 hce_kmu 第51題
  A rod of $0.3\text{ m}$ carries a current of $I = 48.0\text{ A}$ in the direction shown in the figur…
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• 110年 hce_kmu 第55題
  An AC generator consists of 6 turns of a wire. Each turn has an area of $0.040\text{ m}^2$. The loop…
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• 110年 hce_kmu 第56題
  It is known that the magnetic field of $0.17\text{ T}$ can cause an $\text{O}_2^+$ ion to move in a…
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• 110年 hce_kmu 第58題
  A solenoid with 200 turns of copper wires is operated by a $1000\text{ V}$ power supply and must be…
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• 109年 hce_kmu 第15題
  There is a doughnut-shaped toroidal solenoid with 200 turns of wires carrying current 0.02A. The inn…
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• 109年 hce_kmu 第47題
  There is a straight current-carrying conductor with current $I = 10 \text{ A}$ and length $L = 2 \text{ m}$…
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• 109年 hce_kmu 第50題
  The sliding bar has a length of 1.0 m, and moves at 3.0 m/s in a magnetic field of magnitude 0.5 T.…
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• 108年 hce_kmu 第47題
  A segment of wire of total length $2.0\text{ m}$ is formed into a circular loop having 5.0 turns. If…
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• 108年 hce_kmu 第51題
  Two isotopes leave the slit at point S and into a magnetic field of magnitude $0.100\text{ T}$ point…
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• 108年 hce_kmu 第54題
  There is a cylindrical conductor with radius R which carries current I. Which diagram is correct for…
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• 108年 hce_kmu 第55題
  There are two parallel, straight current-carrying conductors with current $I_1$ = $10\text{ A}$ and…
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• 107年 hce_kmu 第9題
  A proton moves around a circular path (radius = $2.0$ mm) in a uniform $0.25$ T magnetic field. What…
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• 107年 hce_kmu 第10題
  A current loop freely rotates in a uniform magnetic field ($B = 0.50$ T). The maximum torque on the…
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• 107年 hce_kmu 第13題
  A magnetic field is directed out of the page. Two charged particles enter from the top and take the…
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• 107年 hce_kmu 第51題
  A $5.0$ A current flows along a wire with $\vec{l} = (1.5\hat{i} - 2.0\hat{j})\text{m}$. The wire re…
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• 107年 hce_kmu 第52題
  The current in an inductor ($L = 40$ mH) is described by $I = 3.0 - 4.0\text{t} + \text{t}^2$ with I…
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• 107年 hce_kmu 第53題
  A stiff wire bent into a semicircle of radius $a = 2.0$ cm is rotated at constant angular speed $40$…
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• 107年 hce_kmu 第54題
  Three long wires parallel to the x axis carry currents as shown. If $I = 20\text{ A}$, what is the m…
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• 107年 hce_kmu 第55題
  The coil shown below has 2 turns, a cross-sectional area of $0.20\text{ m}^2$, and a field (parallel…
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• 106年 hce_kmu 第5題
  A long, straight, hollow cylindrical wire with an inner radius $R$ and an outer radius $2R$ carries…
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• 106年 hce_kmu 第38題
  A solenoid has an inductance $75 \text{ mH}$ and a winding resistance $0.50 \text{ } \Omega$. If a b…
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• 106年 hce_kmu 第40題
  A cyclotron has a dee radius $R$ and is operated at an oscillator frequency $f$ in Hz. What is the m…
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• 106年 hce_kmu 第54題
  The following shows a rod of length $L = 10.0 \text{ cm}$ that is forced to move at constant speed $v = 5.00 \text{ m/s}$…
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• 106年 hce_kmu 第57題
  A particle with mass $m$ and charge $q$, moving with a velocity $v$, enters a region of uniform magn…
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• 106年 hce_kmu 第59題
  A wire loop of area $1000 \text{ cm}^2$ has a resistance of $10 \text{ ohms}$. A magnetic field $B$…
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