Question

A teacher gave the circuit diagram to his students to find the resistance of a parallel combination of two resistances as follows :
A student is finding it difficult to identify the devices marked as X, Y and Z.The correct identification
of X, Y, Z respectively is :
(A) Ammeter, voltmeter, resistance
(B) Rheostat, ammeter, voltmeter
(C) Voltmeter, ammeter, rheostat
(D) Ammeter, rheostat, voltmeter


CBSE Class X Science VSA (1 Mark)

Answer 1

Answer:

option (b)Rheostat, ammeter, voltmeter

Answer 2

The symbols of these devices are given below. You can match these symbols with marked devices X,Y and Z.

Explanation:

Ammeter - It is a device which is used to measure electric current in a circuit.

Voltmeter - It is a device use to measure potential difference across the terminals.

Resistance - It is the opposition is a circuit which resist the flow of electrons in the circuit.

Rheostat - It is a variable resistance in which a knob is given to change the amount of resistance.