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Two coils P and Q are kept near each other. When no current flows through coil P and current increases in coil Q at the rate 10A/s, the e.m.f. in coil P is 15 mV. When coil Q carries no current and current of 1.8 A flows through coil P, the magnetic flux linked with the coil Q is
Two coils P and Q are kept near each other. When no current flows through coil P and current increases in coil Q at the rate 10A/s, the e.m.f. in coil P is 15 mV. When coil Q carries no current and current of 1.8 A flows through coil P, the magnetic flux linked with the coil Q is
Physics | Physics
Two coils P and Q are kept near each other. When no current flows through coil P and current increases in coil Q at the rate 10A/s, the e.m.f. in coil P is 15 mV. When coil Q carries no current and current of 1.8 A flows through coil P, the magnetic flux linked with the coil Q is
  1. 1.4 m Wb
  2. 2.2 m Wb
  3. 2.7 m Wb
  4. 2.9 m Wb

Solution: The correct solution is C. 2.7 m Wb

We have, di/dt = 10

M = E/(di/dt) =15/10

Flux = Mi = 1.5 × 1.8
Flux =2.7mWb
i

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