Question

Arrange the following steps to determine the resistivity of a material in the proper sequence.
(a) Switch on the circuit and take the voltmeter and ammeter readings.
(b) Determine the resistance of the wire as resistance $R=V/I$
(c) Connect the wire, battery and ammeter in series.
(d) Determine the length (l) and area of cross-section (A) of the wire.
(e) Connect a voltmeter across the wire.
(f) The resistivity of the material is $\rho =\frac{RA}{l}$

• A. e b c d f a
• B. a c b e d f
• C. c e a b d f
• D. b c a d f e

Answer 1

The correct option is C c e a b d f

To determine the resistivity of a material in the proper sequence is,

(c) Connect the wire, battery and ammeter in series.

(e) Connect a voltmeter across the wire.

(a) Switch on the circuit and take the voltmeter and ammeter readings.

(b) Determine the resistance of the wire as resistance $R=V/I$.

(d) Determine the length (l) and area of cross-section (A) of the wire.

(f) The resistivity of the material is $\rho =\frac{RA}{l}$