The magnetic flux through a circuit of resistance $R$ changes by an amount $\Delta \phi$ in time $\Delta t$. Then the total quantity of electric charge $Q$ which is passing during this time through any point of the circuit is given by:
- A$Q=\frac{\Delta \phi}{\Delta t}$
- B$Q=\frac{\Delta \phi}{\Delta t} \times R$
- C$Q=-\frac{\Delta \phi}{\Delta t}+R$
- D$Q=\frac{\Delta \phi}{R}$
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