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  • An insulated copper wire of 100 turns is wrapped around a wooden cylindrical core of the cross-sectional area 24 cm2. The two ends of the wire are connected to a resistor. The total resi

An insulated copper wire of 100 turns is wrapped around a wooden cylindrical core of the cross-sectional area 24 cm2. The two ends of the wire are connected to a resistor. The total resistance in the circuit is 12\Omega. If an externally applied uniform magnetic field in the core along its axis changes from 1.5 T in one direction to 1.5 T in the opposite direction, the charge flowing through a point in the circuit during the change of magnetic field will be ______ mC. 

Option: 1

60


Option: 2

-


Option: 3

-


Option: 4

-


Answers (1)

best_answer

\begin{aligned} & |\Delta \mathrm{Q}|=\frac{\Delta \phi}{\mathrm{R}}=\frac{2 \mathrm{NBA}}{\mathrm{R}} \\ & =\frac{2 \times 100 \times 1.5 \times 24 \times 10^{-4}}{12} \\ & =6 \times 10^{-2} \mathrm{c} \\ & =60 \mathrm{mc} \end{aligned}

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vishal kumar

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