Advertisements
Advertisements
प्रश्न
Advertisements
उत्तर
APPEARS IN
संबंधित प्रश्न
If 20 C of charge pass a point in a circuit in 1 s, what current is flowing?
Write down the formula which relates electric charge, time and electric current
A 5 V battery is connected to two 20 Ω resistors which are joined together in series.
(a) Draw a circuit diagram to represent this. Add an arrow to indicate the direction of conventional current flow in the circuit.
(b) What is the effective resistance of the two resistors?
(c) Calculate the current that flows from the battery?
(d) What is the p.d. across each resistor?
What happens to the other bulbs in a series circuit if one bulb blows off?
Draw a circuit diagram showing two electric lamps connected in parallel together with a cell and a switch that works both lamps. Mark an â’¶ on your diagram to show where an ammeter should be placed to measure the current.
In the network shown in the following adjacent Figure, calculate the equivalent resistance between the points.
- A and B
- A and C
Two resistors of 2.0 Ω and 3.0 Ω are connected (a) in series (b) in parallel, with a battery of 6.0 V and negligible internal resistance. For each case draw a circuit diagram and calculate the current through the battery.
Explain, why the potential difference across the terminals of a cell is more when the cell is not in use than it is when the cell is being used.
Small amounts of electrical current are measured in milliampere (mA). How many milliampere are there in 0.25 A ?
