NEET Test Series from KOTA - 10 Papers In MS WORD
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Current Electricity
268243
**Assertion :** Series combination of cells is used when their internal resitance is much smaller than the external resistance. **Reason :** \(I=\frac{n \varepsilon}{R+n r}\) where the symbols have their standard meaning, in series connection
1 Both(A) and (R) aretrueand (R) is thecorrect explanation of A.
2 Both (A) and (R) are true but (R) is not the correct explanation of \(A\).
3 (A) is truebut \((R)\) isfalse
4 (A) isfalsebut (R) is true
Explanation:
Current Electricity
268244
**Assertion (A) :** To draw more current at low P.d; parallel connection of cells is preferred. **Reason (R) :** In parallel connection, current \(i=\frac{n E}{r}\), if \(r \gg \mathbf{R}\).
1 Both(A) and (R) aretrueand (R) isthecorrect explanation of A.
2 Both (A) and (R) are true but (R) is not the correct explanation of \(A\).
268243
**Assertion :** Series combination of cells is used when their internal resitance is much smaller than the external resistance. **Reason :** \(I=\frac{n \varepsilon}{R+n r}\) where the symbols have their standard meaning, in series connection
1 Both(A) and (R) aretrueand (R) is thecorrect explanation of A.
2 Both (A) and (R) are true but (R) is not the correct explanation of \(A\).
3 (A) is truebut \((R)\) isfalse
4 (A) isfalsebut (R) is true
Explanation:
Current Electricity
268244
**Assertion (A) :** To draw more current at low P.d; parallel connection of cells is preferred. **Reason (R) :** In parallel connection, current \(i=\frac{n E}{r}\), if \(r \gg \mathbf{R}\).
1 Both(A) and (R) aretrueand (R) isthecorrect explanation of A.
2 Both (A) and (R) are true but (R) is not the correct explanation of \(A\).