A wire is in N-S direction is dropped freely, will any potential difference induced across it?

200J of heat is produced each second in a 5Omega resistance. Find the potential difference across the resistor.

Define drift velocity of free electrons in a conductor across which a potential difference is applied. How is it related to mobility?

Let the resistance of an electrical component remains constant while the potential difference across the two ends of the component decreases to half of its former value. What change will occur in the current through it?

Name a device that helps to maintain a potential difference across a conductor.

With reference to the circuit shown in Fig. find the following: Potential difference across the parallel.

A capacitor and resistor are connected in series with an ac source. If the potential difference across C and R are 120 V and 90V respectively and if the rms current of the circuit is 3A, calculate (i) impedance and (ii) power factor of the circuit.