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A wire of a certain length is specified to be 200 Ω resistance at 18⁰C what error is caused in using this wire as a standard on a day when the temperature is 32⁰C? The temperature coefficient of resistance of the specimen is 4 x 10-3K-1
A certain resistor has a resistance of 212.1Ω at 25⁰C and a resistance of 214.2 Ω at 50⁰C. What is its temperature coefficient of resistivity?
A 12 Ω and an 18 Ω are connected in parallel and the combination connected across 24oW dc line. (a) What is the resistance of the parallel combination? (b) What is the total current drawn by the combination?(c) what current is drawn by each resistor?
1. 4.2 A potential difference of 75V is applied to a combination of 1.25microFarad and 0.6microfarad capacitor connected in series (a) what is the charge on each capacitor? (b) what is the potential difference across the 1.25microFaradcapacitor
A potential difference of 75V is applied to a combination of 1.25microFarad and 0.6microfarad capacitor connected in series (a) what is the charge on each capacitor? (b) what is the potential difference across the 1.25microFaradcapacitor?
Inside the three-dimensional conductor body is an inflatable cavity. What is the electric field in the cavity when the total charge of the conductor is + Q? And what can you say about the potential in the cavity?
Find the electric field intensity at a point 2cm away from charge 20 micro columb
The inductance of a tuning circuit of an AM radio is 4 mH. Find the capacitance of the circuit required for reception at 1200 kHz.
two equal positive charges q1 = q2 = 2 microcoulomb are located at x = 0, y = 0.30 metre and x = 0, y = - 0.30 metre respectively. what are the magnitude and direction of the electric force q1 and q2 exert on a third charge Q4 microcoulomb at x = 0.40 metre, y = 0?
