Electricity

Question 1

Electric current circuit

Answer 1

1. Rate of flow of electrons
2. Closed flow of electrons the direction is opposite to that of electrons
   Positive to negative
   Charge is amp here
   1 column of charge per second
   Measure by ammeter which is in series

Question 2

Potential

Answer 2

Amount of work done to move 1 column. Of charge between two points
Voltameter
Parallel infinite resistance
Cell creates a difference

Question 3

Ohms law

Answer 3

Current passing through a cuicuit same temperature is directly proportional to the voltage

Question 4

Resistance

Answer 4

Opposes the flow ohms resistor, variable voltage Bina change kiye rheostat
Length proportional
Area indirectly proportional
Nature
Temperature increase resistance increase
Rho constant ohm meter

Question 5

Parallel vs series r equivalent

Answer 5

Rs>R1,R2,R3
Less than individual

Question 6

Advantage of parallel

Answer 6

Current remains constant
Full voltage

Question 7

Heat

Answer 7

V=VIT
= I2RT
VQ

Question 8

Power

Answer 8

VI

Question 9

Joules law

Answer 9

Heat is directly proportional to the square of current
Heat is proportional to R ( bulb tungsten has high resistance)
Heat is proportional to time ( phone heats up)

Question 10

Bulb

Answer 10

Argon and nitrogen
Lifetime of filament
Tungsten

Question 11

Power

Answer 11

I2r
V2/R

Question 12

Parallel identification

Answer 12

Joint

Question 13

Parallel advantages

Answer 13

i) In parallel combination each appliance gets the full voltage. (ii) If one appliance is switched on, others are not affected. (iii) The parallel circuit divides the current through the appliances. Each appliance gets proper current depending on its resistance.

Question 14

SEries

Answer 14

A series circuit provides exactly one path between any two points for electric current. These circuits have the advantage of making each component very dependent on the other components. This means that if one component is removed, all of the components turn off.

Question 15

Variable Resistance

Answer 15

Rheostat, change resistance without meddling with the voltage

Question 16

Heating

Answer 16

Current: Electric current generates heat to overcome the resistance offered by the conductor through which it passes. Higher the resistance, the electric current will generate higher amount of heat. Thus, generation of heat by electric current while passing through a conductor is an inevitable consequence. This heating effect is used in many appliances, such as electric iron, electric heater, electric geyser, etc.