Types of Material|Current|Questions|Potential Difference|Elements of Circuit

Which circuit diagram shows voltmeter V and ammeter A correctly positioned to measure the total potential difference of the circuit and the current through each resistor?

The phase angle between current and potential difference in an AC circuit contianing of resistance 4Omega and reactance 3Omega will be

An a.c. circuit contains a resistance of 3 Omega and inductive reactance of 4Omega . The cosine of the phase angle between the current and potential difference in this circuit is

Name the instrument used to measure (i) electric current in a circuit, (ii) potential difference between two points in a circuit.

Potential difference between the points B and E of the circuit is -