In an apparatus, the electric field was found to oscillate with an amplitude of 18 V/m. The magnitude of the oscillating magnetic field will be :
Correct answer: B. 6 x 10^-8 T
- A. 4 x 10^-6 T
- B. 6 x 10^-8 T
- C. 9 x 10^-9 T
- D. 11 x 10^-11 T
Explanation
This is the following solution:B0=E0/cSince B0=E0/c therefore B0=18/3×10⁸=6×10-8
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About Alternating Current
Alternating current varies periodically, so phase relationships become essential when current passes through a resistor, capacitor or inductor. The chapter distinguishes resistance from capacitive and inductive reactance, explains phase lead and lag, and connects changing electric and magnetic fields with the production and properties of electromagnetic waves.
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