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.

The following table gives the length of three copper wires, their diameters and the applied potential difference across their ends. Arrange the wires in increasing order according to the following The current density within them.

How can pressure be increased or decreased?

The following table gives the length of three copper wires, their diameters and the applied potential difference across their ends. Arrange the wires in increasing order according to the following The drift speed of electrons through them?

The following table gives the length of three copper wires, their diameters and the applied potential difference across their ends. Arrange the wires in increasing order according to the following The magnitude of the electric field within them?

When temperature of metal increases, does the resistance increases or decreases?

In an experimenal to study the dependance of current on potential difference across a resistor, a student obtained graph s shown below: Calculate the value of resistance of the resistor.

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

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

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?