AI Mentor

Check Your IQ

Free Expert Demo

Try Test

Courses

Dropper NEET Course Dropper JEE Course Class - 12 NEET Course Class - 12 JEE Course Class - 11 NEET Course Class - 11 JEE Course Class - 10 Foundation NEET Course Class - 10 Foundation JEE Course Class - 10 CBSE Course Class - 9 Foundation NEET Course Class - 9 Foundation JEE Course Class -9 CBSE Course Class - 8 CBSE Course Class - 7 CBSE Course Class - 6 CBSE Course

Offline Centres

There is a metallic ring of radius 1 m having negligible resistance placed perpendicular to a constant magnetic field of magnitude 1 T as shown in figure. One end of a resistanceless rod is hinged at the centre of ring O and the other end is placed on the ring. Now the rod is rotated with constant angular velocity $ω = 4$ rad/s and circuit is connected as shown in the figure. Initially switch is open and capacitor is uncharged. If switch S is closed at $t = 0$ , then calculate heat loss (in $μ J$ ) in the resistor $R_{1}$ from $t = 0$ to the instant when voltage across the capacitor becomes half of the steady state voltage (ignore friction).

see full answer

Your Exam Success, Personally Taken Care Of

1:1 expert mentors customize learning to your strength and weaknesses – so you score higher in school , IIT JEE and NEET entrance exams.

An Intiative by Sri Chaitanya

answer is 3.

(Unlock A.I Detailed Solution for FREE)

Best Courses for You

JEE

NEET

Foundation JEE

Foundation NEET

CBSE

Detailed Solution

Let voltage across capacitor be $V_{0}$

$H = (C V_{0}) V = \frac{1}{2} C V_{0}^{2}$

Where $V_{0} = \frac{V}{2}$

$H = \frac{C V^{2}}{2} - \frac{1}{8} C V^{2} = \frac{3}{8} C V^{2}$

Heat dissipated through $R_{1}, H_{1} = \frac{2}{3} H$

$H_{1} = \frac{2}{3} \times \frac{3}{8} C V^{2} H_{1} = \frac{1}{4} C V^{2} V = \frac{1}{2} B ω l^{2} = \frac{1}{2} \times 1 \times 4 \times 1 = 2 v o l t s H_{1} = \frac{1}{4} \times 3 \times 4 = 3 μ J$

Watch 3-min video & get full concept clarity

courses

No courses found

Result Producing online coaching for JEE/NEET of south India

Largest All India Test Series for JEE/NEET

Best Online Course for IIT JEE

Best Online Course for NEET

Best Online Course for CBSE

Ready to Test Your Skills?

Check your Performance Today with our Free Mock Test used by Toppers!

Take Free Test

Get Expert Academic Guidance – Connect with a Counselor Today!