The current flowing through a conductor connected across a source is 2 A and 1. 2 A at 0°C and 100°C respectively. The current flowing through the conductor at 50°C will be_____x 10^2 mA.

Question

Accepted Answer

Correct answer: 15. (15) By Ohm's law V = IR Let the current and resistance at 0 ° C be i_0 & R_0 respectively. Let the current and resistance at 100° C be i_100 & R_100 respectively. By the given condition, i_0R_0=i_100R_100 ⇒2R_0=1.2R_0(1+100 ) ⇒1+100 = 53 ⇒50 = 13 Since the voltage remains constant, i_50R_50=i_0R_0 ⇒i_50= i_0R_0R_50= 2 R_0R_0(1+50 )= 21+ 13=1.5A ⇒i_50=15 10^2mA

$The current flowing through a conductor connected across a source is 2 A and 1. 2 A at 0°C and 100°C respectively. The current flowing through the conductor at 50°C will be_____x 1 0^{2} mA.$

Solution

More Current Electricity PYQs