268419
A current of \(3 A\) flows in a circuit shown in the figure. The potential difference between \(A\) and \(B\) is
1 \(4 \mathrm{~V}\)
2 \(3 \mathrm{~V}\)
3 \(2 \mathrm{~V}\)
4 \(5 \mathrm{~V}\)
Explanation:
\(V=i R\)
Current Electricity
268420
The resistance of the network between the terminals \(A\) and \(B\) is
1 \(30 \Omega\)
2 \(20 \Omega\)
3 \(50 \Omega\)
4 \(60 \Omega\)
Explanation:
End resistors are not considered
Current Electricity
268421
In the figure, the value of resistance to be connected between \(C\) and \(D\) so that the resistance of the entire circuit between \(A\) and \(B\) does not change with the number of elementary sets used is
1 \(R\)
2 \(R(\sqrt{3}-1)\)
3 \(3 R\)
4 \(R(\sqrt{3}+1)\)
Explanation:
Resitance between \(A B\) is independent of number of sets used. Let \(x\) bethe \(R_{\text {eff }}\) betweenAB \(\rightarrow(1)\) \(x=R \|[2 R+x]\)
Current Electricity
268422
The effective resistance across the points \(A\) and \(I\) is
268419
A current of \(3 A\) flows in a circuit shown in the figure. The potential difference between \(A\) and \(B\) is
1 \(4 \mathrm{~V}\)
2 \(3 \mathrm{~V}\)
3 \(2 \mathrm{~V}\)
4 \(5 \mathrm{~V}\)
Explanation:
\(V=i R\)
Current Electricity
268420
The resistance of the network between the terminals \(A\) and \(B\) is
1 \(30 \Omega\)
2 \(20 \Omega\)
3 \(50 \Omega\)
4 \(60 \Omega\)
Explanation:
End resistors are not considered
Current Electricity
268421
In the figure, the value of resistance to be connected between \(C\) and \(D\) so that the resistance of the entire circuit between \(A\) and \(B\) does not change with the number of elementary sets used is
1 \(R\)
2 \(R(\sqrt{3}-1)\)
3 \(3 R\)
4 \(R(\sqrt{3}+1)\)
Explanation:
Resitance between \(A B\) is independent of number of sets used. Let \(x\) bethe \(R_{\text {eff }}\) betweenAB \(\rightarrow(1)\) \(x=R \|[2 R+x]\)
Current Electricity
268422
The effective resistance across the points \(A\) and \(I\) is
268419
A current of \(3 A\) flows in a circuit shown in the figure. The potential difference between \(A\) and \(B\) is
1 \(4 \mathrm{~V}\)
2 \(3 \mathrm{~V}\)
3 \(2 \mathrm{~V}\)
4 \(5 \mathrm{~V}\)
Explanation:
\(V=i R\)
Current Electricity
268420
The resistance of the network between the terminals \(A\) and \(B\) is
1 \(30 \Omega\)
2 \(20 \Omega\)
3 \(50 \Omega\)
4 \(60 \Omega\)
Explanation:
End resistors are not considered
Current Electricity
268421
In the figure, the value of resistance to be connected between \(C\) and \(D\) so that the resistance of the entire circuit between \(A\) and \(B\) does not change with the number of elementary sets used is
1 \(R\)
2 \(R(\sqrt{3}-1)\)
3 \(3 R\)
4 \(R(\sqrt{3}+1)\)
Explanation:
Resitance between \(A B\) is independent of number of sets used. Let \(x\) bethe \(R_{\text {eff }}\) betweenAB \(\rightarrow(1)\) \(x=R \|[2 R+x]\)
Current Electricity
268422
The effective resistance across the points \(A\) and \(I\) is
268419
A current of \(3 A\) flows in a circuit shown in the figure. The potential difference between \(A\) and \(B\) is
1 \(4 \mathrm{~V}\)
2 \(3 \mathrm{~V}\)
3 \(2 \mathrm{~V}\)
4 \(5 \mathrm{~V}\)
Explanation:
\(V=i R\)
Current Electricity
268420
The resistance of the network between the terminals \(A\) and \(B\) is
1 \(30 \Omega\)
2 \(20 \Omega\)
3 \(50 \Omega\)
4 \(60 \Omega\)
Explanation:
End resistors are not considered
Current Electricity
268421
In the figure, the value of resistance to be connected between \(C\) and \(D\) so that the resistance of the entire circuit between \(A\) and \(B\) does not change with the number of elementary sets used is
1 \(R\)
2 \(R(\sqrt{3}-1)\)
3 \(3 R\)
4 \(R(\sqrt{3}+1)\)
Explanation:
Resitance between \(A B\) is independent of number of sets used. Let \(x\) bethe \(R_{\text {eff }}\) betweenAB \(\rightarrow(1)\) \(x=R \|[2 R+x]\)
Current Electricity
268422
The effective resistance across the points \(A\) and \(I\) is
