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A twoterminal variable resistor is known as a
The parallel combination of a 6.8 kΩ resistor and a 10 kΩ resistor is in series with the parallel combination of a 2.2 kΩ resistor and a 1 kΩ resistor. A 100 V source is connected across the circuit. The resistor(s) with the greatest voltage drop is (are)
A 40 Ω resistor is in parallel with an 80 Ω resistor. Current in the 40 Ω resistor is 6 A. How will you add a third resistor and what will be its value if the line-current is to be 10 A?
A source maintains a current I in a resistor of resistor of resistance R. If V is the potential difference across the resistor. The electrical energy dissipated in the resistor in time is given _____
Two resistors are in series: a 5.6 kΩ resistor and a 4.7 kΩ resistor. The voltage drop across the 5.6 kΩ resistor is 10 V. The voltage across the 4.7 kΩ resistor is
Four resistors are connected in parallel. Fifteen mA flows through resistor R. If the second resistor is 2R, the third resistor 3R, and the fourth resistor 4R, the total current in the circuit is
A certain series circuit consists of a $$\frac{1}{8}$$ W resistor, a $$\frac{1}{4}$$ W resistor and a $$\frac{1}{2}$$ W resistor. The total resistance is 1200 Ω. If each resistor is operating in the circuit at its maximum power dissipation, total current flow is
A 12 kΩ resistor, a 15 kΩ resistor, and a 22 kΩ resistor are in series with two 10 kΩ resistors that are in parallel. The source voltage is 75 V. Current through the 15 kΩ resistor is approximately
To measure an A. C. voltage by using an A.C. potentiometer, it is desirable that the supply for the potentiometer in taken
In an AC co-ordinate potentiometer, the currents in the phase and quadrature potentiometer are adjusted to be