Electric Circuits Answers

A battery of four cells each of e.m.f. 1.5V and internal resistance 1.0 ohm are connected to a 1 ohm resistor in series with a parallel combination of two 2 ohms resistors. Draw the circuit diagram and calculate:
(a) the combined external resistance.
(b) the current in the circuit.
(c) the lost volts in the battery.
(d) the current in one of the two resistors

Electric room heater draw current of 24A from 120V supply line what current will this room heater draw when connected to 240V supply line

A person standing on general mass of earth touches a conductor on a 240v supply, if the resistance of the body is 4800mohm. calculate the current flowing.

an electric heater is operated by applying a p.d of 50V to the resistance wire. Calculate the current carried by the wire and power rating of the electric heater. Then explain what would happen to the current and power if the applied voltage to the heater is doubled.

Battery technology. Why can’t car batteries be charged up in Saharan countries then be transported in quantity to Northern Europe and fitted into cars designed to accept a ‘click and clunk’ method (similar to my battery drill). This would mean not having to accept waiting for a charge. Cars would need to be re-designed to accept an independent battery pack automatically pulled out and pushed in. Free sunshine in Northern Africa could help their economies in the transition from fossil fuels to battery technology. Ships could be designed to take fresh drinking water south and re-charged batteries north. This is a question!

Two lamps rated 60w and 240v are connected in series. What is the total power dissipated in both.

Four capacitors C1=1uF, C2=2uF, C3=3uF, C4=4uF are connected to a 12V battery as shown in the figure in which C1 and C2 are in series and are parallel to C3 and C4 which are in series. Find
a) the capacitance between the points A and B
b) the total charge in the circuit
c) the charge on each capacitor, and
d) the potential on each capacitor

A 1.435g of Naphthalene (C10H8) was burned in Constant Volume Bomb Calorimeter. Consequently temperature of the water rose from 20.17°C to 25.84°C. If the mass of water surrounding the calorimeter was exactly 2.0 X 103 kg and the heat capacity of the bob calorimeter was 1.80 Kj/°C, Calculate the molar heat of reaction (combustion) in KJ of Naphthalene.

A current of 5.0A shows through an automobile headlight. How many coulombs of charge show through the headlamp in 2.00hrs

All the Heat generated by a current of 2Ampere passing through a 6ohms resistor for 25seconds is used to evaporate 5g of liquid at its boiling point. What is the specific Latent Heat of the Liquid?