Electric Circuits Answers

Why the electric field between two parallel plates of a capacitor decreases when a dielectric is inserted if the capacitor is not connected to a power supply , but remains the same when it is connected to a power supply.

An electric blanket uses 21V to heat up when it is switched on. In 5 mins, the blankets circuit transfers 15kJ of energy to the thermal energy store of its surroundings.
Calculate the resistance of the circuit in the electric blanket

A battery is connected to three resistors R1=8.0, R2=12 and R3=5.0 . Find the equivalent resistance in the circuit

Two charges pellets, each with a charge of 5C, are located a distance 15m apart. What is the electric force between the two pellets?

5. A radio transmitter transmits a signal of 1MHz range. Which are the five possible selections of capacitor and inductor for capture this signal?

100 Watt 200 volt find current and resistance

If the voltage across the dry cell is constant at 9V what would the voltmeter indicate when the switch is open

Calculate the electric field intensity of a p-n whose voltage as thusat x = 300m as V(x) = 350x^2 - 50x + 70

What quantity of charge moves across a section through the conductor during the interval t

To know the resistance G of a galvanometer by half deflection method, a battery of emf VE and resistance R is used to deflect the galvanometer by angle θ. If a shunt of resistance S is needed to get half deflection then G,R and S are related by the equation :
(1)2S(R+G)=RG
(2)S(R+G)=RG
(3)2S=G
(4)2G=S