NEET · Physics · STD 12 - 3. current electricity
A resistor is connected to a battery of 12 V emf and internal resistance 2 Ω. If the current in the circuit is 0.6 A, the terminal voltage of the battery is :
- A 10 V
- B 1.2 V
- C 12 V
- D 10.8 V
Answer & Solution
Correct Answer
(D) 10.8 V
Step-by-step Solution
Detailed explanation
(D) 10.8V
The terminal voltage \(V\) of a battery discharging in a circuit is given by the relation:
\(V=E-I r\)
Substituting the given values \(E=12 V, r=2 \Omega\), and \(I=0.6 A\) :
\(V=12-(0.6 \times 2)\)
\(V=12-1.2\)
\(V=10.8 V\)
The terminal voltage \(V\) of a battery discharging in a circuit is given by the relation:
\(V=E-I r\)
Substituting the given values \(E=12 V, r=2 \Omega\), and \(I=0.6 A\) :
\(V=12-(0.6 \times 2)\)
\(V=12-1.2\)
\(V=10.8 V\)
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