Student Login

Home›Chapters›Current Electricity PYQs›Electrical Power & Heating Effect›Question 101

NEET 1989 (AIPMT) · Electrical Power & Heating Effect

Electrical Power & Heating Effect question from NEET 1989 (AIPMT)

Q101NEET 1989 · AIPMTEasy

Electrical Power & Heating Effect

A current of $2\text{ A}$ , passing through a conductor produces $80\text{ J}$ of heat in 10 seconds. The resistance of the conductor in ohm is

Show answer and solution

Answer: (b)

$H = I^2 R t \Rightarrow R = \frac{H}{I^2 t}$ .
$R = \frac{80}{4 \times 10} = 2\ \Omega$ .
So the answer is (b) 2.

Report a mistake

More questions on Electrical Power & Heating Effect

40 electric bulbs are connected in series across a 220 V supply. After one bulb is fused…NEET 1989 (AIPMT)
A room heater is rated 400 W, 220 V. If the supply voltage drops to 200 V, what will be…NEET 2026
An electric power line having total resistance of 2 Ω, delivers 1 kW of power at 250 V…JEE Main 2026 (22 Jan, Shift 2)
Refer to the circuit diagram given below. The heat generated across the 6 Ω resistance in…JEE Main 2026 (6 Apr, Shift 1)
The heat generated in 1 minute between points A and B in the given circuit, when a…JEE Main 2026 (21 Jan, Shift 1)
Two resistors of 200 Ω and 400 Ω are connected in series with a battery of 100 V. A bulb…JEE Main 2026 (2 Apr, Shift 2)
A motor operating on 100 V draws a current of 1 A. If the efficiency of the motor is…JEE Main 2025 (3 Apr, Shift 2)
The battery of a mobile phone is rated as 4.2 V, 5800 mAh. How much energy is stored in…JEE Main 2025 (2 Apr, Shift 1)