Question

Magnetic flux in a circuit containing a coil of resistance $2 \Omega$ changes from 2.0 Wb to 10 Wb in 0.2 sec. The charge passed through the coil in this time is

• A. 0.8 C
• B. 1.0 C
• C. 5.0 C
• D. 4.0 C

Answer 1

Answer: (D)

4.0 C

Answer 2

$q = \frac { N } { R } ( \Delta \phi ) = \frac { 1 } { 2 } \times ( 10 - 2 ) = 4 C$