Relationship between Electric Current, Voltage and Resistance

Relationship between resistance and electric current

1. The quantity of electric current that flows through a circuit will change according to the resistance.
2. The bigger the resistance, the smaller the electric current that flows through a circuit.
3. If the resistance is small, the quantity of electric current that flows through a circuit will be big.

Relationship between voltage and electric current

1. The quantity of electric current that flows through a circuit will change according to the voltage.
2. The higher the voltage, the greater the electric current that flows through the circuit.
3. When the voltage of an electric source increases, the electric current that flow.

Relationship between voltage, electric current and resistance in ohm's law

1. The electric current that flows increases at the same rate as the rate of increase in voltage value.
2. The voltage quantity is directly proportional to the quantity of electric current.
3. The relationship between voltage, electric current and resistance is called Ohm's law.
4. R is constant for a fixed resistor. Therefore, the ratio of voltage to electric current, I, is always fixed. This fixed value is called resistance.
5. If a voltage (V) versus electric current (A) graph is drawn, a straight line that passes through the origin is obtained. The gradient of the graph represents the circuit resistance.
6. Ohm's law is used to solve problems related to values of voltage, electric current and resistance.
7. If any two values in the formula R =V/I are known, the third value can be determined.
8. The following steps are a guide to solving problems related to Ohm's law.