A voltage amplifier needs a high input resistance and a low output resistance. Select one: True False

Explanation:

In electric circuit , the potential difference is always developed across the resistance .

Now is we are to amplify the voltage , that means low input voltage is converted into high voltage output .

Therefore we require low resistance at input for low voltage and high out put resistance for high output

Thus the statement given is wrong .

pe = weightxheight = 2000x1000=2,000,000joules

no. dot product   =0 when vecs at right angles