As the voltage increases, the current flowing through the circuit increases while the resistance of the resistor remains constant.
Explanation:
Ohm's law states that the current flowing through a circuit is directly proportional to the applied voltage.
V = IR
where;
I is the current
R is the resistance
V is the applied voltage
Based on this law (Ohm's law), as the voltage increases, the current flowing through the circuit increases while the resistance of the resistor remains constant.
The angle between the string and the vertical is computed by: Centripetal acceleration Ac = V²/R = 18²/75 = 4.32 m/s² horizontal Gravitational acceleration g = 9.8 m/s² down
Θ = arctan(Ac/g) = arctan (4.32m/s^2 / 9.8 m/s^2) = 23.79° is the answer.
