268307
The effective resistance between \(A\) and \(B\) in the given circuit is
1 \(20 \Omega\)
2 \(7 \Omega\)
3 \(3 \Omega\)
4 \(6 \Omega\)
Explanation:
Combination of resistors
Current Electricity
268308
How many cells each marked ( \(V-12 A\) ) should beconnected in mixed grouping so that it may be marked \((24 V-24 A)\)
1 4
2 8
3 12
4 6
Explanation:
Number of rows \(=\frac{\text { requiredcurrent }}{\text { Givencurrent }}\) \(=\frac{24 \mathrm{~A}}{12 \mathrm{~A}}=2=\mathrm{m}\) Number of cells in each row \(=\frac{\text { requried potential }}{\text { Given potential }}\) \(=\frac{24}{6}=4=\mathrm{n}\) \(\therefore\) Total no of cells \(=\mathrm{n} \times \mathrm{m}\) \(=2 \times 4=8\)
Current Electricity
268309
The effective resistance in series combination of two equal resistance is ' \(s\) '. When they are joined in parallel the total resistance isp. If \(s=n p\) then the minimum possible value of ' \(n\) ' is
1 4
2 1
3 2
4 3
Explanation:
\(R_{s}=n \cdot R_{p}\)
Current Electricity
268351
Three resistances each of \(3 \Omega\) are connected as shown in fig. The resultant resistance between \(A\) and \(F\) is
268307
The effective resistance between \(A\) and \(B\) in the given circuit is
1 \(20 \Omega\)
2 \(7 \Omega\)
3 \(3 \Omega\)
4 \(6 \Omega\)
Explanation:
Combination of resistors
Current Electricity
268308
How many cells each marked ( \(V-12 A\) ) should beconnected in mixed grouping so that it may be marked \((24 V-24 A)\)
1 4
2 8
3 12
4 6
Explanation:
Number of rows \(=\frac{\text { requiredcurrent }}{\text { Givencurrent }}\) \(=\frac{24 \mathrm{~A}}{12 \mathrm{~A}}=2=\mathrm{m}\) Number of cells in each row \(=\frac{\text { requried potential }}{\text { Given potential }}\) \(=\frac{24}{6}=4=\mathrm{n}\) \(\therefore\) Total no of cells \(=\mathrm{n} \times \mathrm{m}\) \(=2 \times 4=8\)
Current Electricity
268309
The effective resistance in series combination of two equal resistance is ' \(s\) '. When they are joined in parallel the total resistance isp. If \(s=n p\) then the minimum possible value of ' \(n\) ' is
1 4
2 1
3 2
4 3
Explanation:
\(R_{s}=n \cdot R_{p}\)
Current Electricity
268351
Three resistances each of \(3 \Omega\) are connected as shown in fig. The resultant resistance between \(A\) and \(F\) is
268307
The effective resistance between \(A\) and \(B\) in the given circuit is
1 \(20 \Omega\)
2 \(7 \Omega\)
3 \(3 \Omega\)
4 \(6 \Omega\)
Explanation:
Combination of resistors
Current Electricity
268308
How many cells each marked ( \(V-12 A\) ) should beconnected in mixed grouping so that it may be marked \((24 V-24 A)\)
1 4
2 8
3 12
4 6
Explanation:
Number of rows \(=\frac{\text { requiredcurrent }}{\text { Givencurrent }}\) \(=\frac{24 \mathrm{~A}}{12 \mathrm{~A}}=2=\mathrm{m}\) Number of cells in each row \(=\frac{\text { requried potential }}{\text { Given potential }}\) \(=\frac{24}{6}=4=\mathrm{n}\) \(\therefore\) Total no of cells \(=\mathrm{n} \times \mathrm{m}\) \(=2 \times 4=8\)
Current Electricity
268309
The effective resistance in series combination of two equal resistance is ' \(s\) '. When they are joined in parallel the total resistance isp. If \(s=n p\) then the minimum possible value of ' \(n\) ' is
1 4
2 1
3 2
4 3
Explanation:
\(R_{s}=n \cdot R_{p}\)
Current Electricity
268351
Three resistances each of \(3 \Omega\) are connected as shown in fig. The resultant resistance between \(A\) and \(F\) is
268307
The effective resistance between \(A\) and \(B\) in the given circuit is
1 \(20 \Omega\)
2 \(7 \Omega\)
3 \(3 \Omega\)
4 \(6 \Omega\)
Explanation:
Combination of resistors
Current Electricity
268308
How many cells each marked ( \(V-12 A\) ) should beconnected in mixed grouping so that it may be marked \((24 V-24 A)\)
1 4
2 8
3 12
4 6
Explanation:
Number of rows \(=\frac{\text { requiredcurrent }}{\text { Givencurrent }}\) \(=\frac{24 \mathrm{~A}}{12 \mathrm{~A}}=2=\mathrm{m}\) Number of cells in each row \(=\frac{\text { requried potential }}{\text { Given potential }}\) \(=\frac{24}{6}=4=\mathrm{n}\) \(\therefore\) Total no of cells \(=\mathrm{n} \times \mathrm{m}\) \(=2 \times 4=8\)
Current Electricity
268309
The effective resistance in series combination of two equal resistance is ' \(s\) '. When they are joined in parallel the total resistance isp. If \(s=n p\) then the minimum possible value of ' \(n\) ' is
1 4
2 1
3 2
4 3
Explanation:
\(R_{s}=n \cdot R_{p}\)
Current Electricity
268351
Three resistances each of \(3 \Omega\) are connected as shown in fig. The resultant resistance between \(A\) and \(F\) is
