A solenoid is connected to a battery so that a steady current flows through it. If an iron core is inserted into the solenoid, will the current increase or decrease?Explain.

Resistances are connected in …..so as to pass the same current through them.

Electric current flowing through a conductor depends

A wire in the form of a tightly wound solenoid is connected to a DC source and carrries a current .If the coil is stretched so that there are gaps between successive elements of the spiral coil,will the current increase or decrease ?Explain.

What change do we observe in the galvanometer if the current in the solenoid coil is increased?

A copper wire of resistance 100 Q is connected to a battery of potential difference 25 V. What will be the current flowing through the wire? If the wire is replaced by aluminium wire, the current flowing through it decreases by 0.05 A. What is the resistance of aluminium wire used?

A current flows through a circuit due to the differnce in ………….between two points in the conductor.

The quantity of charge that flows through a given cross section in one second, when there is a steady current of one ampere is

when a semiconductor device is connected in series with a battery and a resistance, a current is found to flow in the circuit . If , hiwever the polarity of the battery is reversed, practically no current flows in the circuit. The device may be

If the current flowing through a straight conductor is increased, the intensity of the magnetic field _________.

The flow of the electric current through a metallic conductor is