Magnetic Effect of Electric Current
1 NEET Physics previous year questions on Magnetic Effect of Electric Current — options free on every question; 1 include the answer & explanation free, the rest unlock with PYQ Pass.
Water falls from a height of \( 60 \mathrm{~m} \) at the rate of \( 15 \mathrm{~kg} / \mathrm{s} \) to operate a turbine. The losses due to frictional forces are \( 10 \% \) of energy. How much power is generated by the turbine? (Take, \( g=10 \mathrm{~m} / \mathrm{s}^{2} \) )
[NEET 2021]
\( 8.1 \mathrm{~kW} \)
\(\Rightarrow \text{ }P=15\frac{\text{ kg}}{\text{ s}}\times 10\times 60\)
\(\Rightarrow \text{ }P=9000\text{ W}\)
The friction losses,
\(\Rightarrow \text{ }L=9000\times \frac{10}{100}=900\text{ W}\)
The power generated by the turbine is equal to,
\(P=9000-900\)
\(\Rightarrow P=8100W\)
\(\Rightarrow P=8.1kW\)
The power generated by the turbine is 8.1 kW.
(NEW NCERT 11th Page No. 83)
Practice more NEET Physics PYQs
Browse every Physics chapter, or explore the full NEET question bank.
🧲 All Physics chapters →