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NEET 2020 Revision: Current Electricity - 4
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Question 1
The charge(q) (in C) flowing through a cross-sectional area is given as a function of time(t) (in sec):
q(t)=(6t2+3t+4) A
What is the instantaneous current through the cross-section at t=1 sec?
q(t)=(6t2+3t+4) A
What is the instantaneous current through the cross-section at t=1 sec?
Question 2
If each resistor shown in the figure has resistance 20 Ω and the e.m.f of battery is 10 V, then, the current flowing through the battery is?
Question 3
If voltage across a bulb rated 220 V-100 W drops by 2.5% of its rated value, the percentage of the rated value by which the power would decrease is
Question 4
An inductor (L = 20 H), a resistor (R = 100) and a battery (E = 10 V) are connected in series. After a long time, the circuit is short-circuited and then the battery is disconnected. Find the current in the circuit at 1 ms after short circuiting.
Question 5
6Ω and 12Ω resistors are connected in parallel. This combination is connected in series with a 10 V battery and 6Ω resistor. What is the potential difference between the terminals of the 12Ω resistor?
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Mar 3NEET & AIIMS