Question

(a) What is the ratio of potential difference and current known as?
(b) The values of potential difference V applies across a resistor and the corresponding values of current I flowing in the resistor are given below Potential differences, V (in volts)
2.5
5.0
10.0
15.0
20.0
25.0
Current, I (in amperes)
0.1
0.2
0.4
0.6
0.8
1.0
Plot a graph between V and I, and calculate the resistance of the resistor.
(c) Name the law which is illustrated by the above V−I graph.
(d) Write down the formula which states the relation between potential difference, current and resistance.
(e) The potential difference between the terminals of an electric iron is 240 V and the current is 5.0 A. What is the resistance of the electric iron?

Answer 1

Answer:

(a)resistance

(b) calculate by R=v/i

(e) R=V /I

=240/0.5= 480ohm

Answer 2

Answer:

solved

Explanation:

(a) What is the ratio of potential difference and current known as Resistance

b) the best straight line was drawn , it's equation is V = 25i , R = 25 ohm

(c) Name the law which is illustrated by the above V−I graph.

ohms law

(d) Write down the formula which states the relation between potential difference, current and resistance.

V = Ri

(e) The potential difference between the terminals of an electric iron is 240 V and the current is 5.0 A. What is the resistance of the electric iron?

R = v/i = 240/5 = 48 ohm.