Doubtclip is an AI tutor that turns any homework or exam doubt into a step-by-step whiteboard video lesson with diagrams, formulas, and voice explanation.

Which subjects and exams does it support?

It supports Physics, Chemistry, Mathematics/Calculus and related STEM doubts for school boards, JEE, NEET, and global high-school / undergrad practice.

How do I get a video solution?

Upload a photo of the question or paste the text, sign in, and Doubtclip generates a whiteboard-style explanation video you can watch and share.

Is Doubtclip available worldwide?

Yes. Doubtclip is a web app for students globally. Lessons are available in English and Hinglish.

Current Electricity

JEE Main level, numerical answer, medium

243 of 380

Question 243 of 380

A resistor develops $300J$ of thermal energy in $15s$ , when a current of $2A$ is passed through it. If the current increases to $3A$ , the energy developed in $10s$ is _____ $J$ .

Show answer and solution

Answer: 450

Energy produced is given by

H={i}^{2}Rt

When

i=2A,t=15s

, energy is

H=300={2}^{2}\times R\times 15

Resistance is

R=5\Omega

When

i=3A,t=10s

.
Energy is

{H}^{'}={3}^{2}\times 5\times 10

=450J

JEE Main question paper PDF

Open a shift to read the full paper on this page, or download it.

JEE Main 2025 Apr 2 Shift 1 question paper

Open Download PDF

Opening paper…

Explain it as a whiteboard videoStep-by-step, in Hinglish or English. Your first video needs no login.Solved it on paper but got it wrong?Upload a photo of your working. Mistake Doctor marks the exact line that broke.

See it move: Circuit builder simulationDrag the sliders and watch the numbers in this question change.Revise Current Electricity firstFormula sheet, solved examples and the traps students fall into.

More Physics practice

JEE Main Physics practice question on Current Electricity (Electric Power and Heating Effect of Current), with the answer and a step-by-step solution. Scan a question from your own book or paper to get a whiteboard video.

A resistor develops 300J300J300J of thermal energy in 15s15s15s, when a current of 2A2A2A is passed through it. If the current increases to 3A3A3A, the energy developed in 10s10s10s is _____ JJJ.

JEE Main question paper PDF

More Physics practice

A resistor develops $300J$ of thermal energy in $15s$ , when a current of $2A$ is passed through it. If the current increases to $3A$ , the energy developed in $10s$ is _____ $J$ .