Advertisements
Advertisements
प्रश्न
An electric bulb draws 0.5 A current at 3.0 V. Calculate the resistance of the filament of the bulb.
Advertisements
उत्तर
I = 0.5 A, V = 3.0 V
Resistance of filament of the bulb R = `"V"/"I" = 3.0/0.5 = 6 Omega`
संबंधित प्रश्न
What is the unit of electric charge?
Calculate the work done in moving a charge of 4 coulombs from a point at 220 volts to another point at 230 volts.
What is the ratio of potential difference and current known as?
The following table shows current in Amperes and potential difference in Volts.
What will be the nature of the graph between the current and potential difference? (Do not draw a graph.)

Write proper word from the following group of words in the blank.
(magnetism, 4.5V, 3.0V, gravitational attraction, potential difference, potential, higher, lower, 0V)
Water in the waterfall flows from a higher level to the lower level because of ______.
State whether the potential is a scalar or vector?
In the figure given below, A, B and C are three ammeters. The ammeter B reads 0.5A. (All the ammeters have negligible resistance.)

Calculate:
(i) the readings in the ammeters A and C.
(ii) the total resistance of the circuit.
Electric potential is a ____________.
100 J of heat is produced each second in a 4 Ω resistor. The potential difference across the resistor will be:
How will you conclude that the same potential difference (voltage) exists across three resistors connected in a parallel arrangement to a battery?
