Exams › NEET › Physics

The magnetic flux through a circuit of resistance R changes by an amount Δϕ in a time Δt. Then the total quantity of electric charge Q that passes any point in the circuit during the time Δt is represented by

1. Q = R Δϕ / Δt
2. Q = 1 / R Δϕ / Δt
3. Q = Δϕ / R
4. Q = Δϕ / Δt

Correct answer: Q = Δϕ / R

Solution

The induced emf is given by Faraday's law as E = Δϕ / Δt. Using Ohm's law, the current I = E / R = (Δϕ / Δt) / R. The total charge Q is then Q = I × Δt = Δϕ / R.

Related NEET Physics questions

• Which of the following statement regarding transformer is incorrect?
• Which one of the following statements is true?
• Which statement is incorrect related to induced electric field due to changing magnetic flux?
• A dynamo produces an electric current. It is based on the principle:
• In electromagnetic induction, the induced E.M.F is independent of
• A conductor is moved in a varying magnetic field. Name the law which determines the direction of current induced in the conductor:

⚔️ Practice NEET Physics free + battle 1v1 →