In a meterbridge length of the wire is 100cm. At what point balance point be obtained if the resistance are in the ratio 4:5.

Why should the balance point be obtained in the middle of the wire of a metre bridge?

In a meter bridge the resistance R and x, R being less than x. A balance point is obtained 40 cm from zero and on shunting the coil by 50Omega the balance point moves through 10cm. Calculate the value of R and x.

A resistance wire connected in the left gap of a metre bridge balances a 10Ω resistance in the right gap at a point which divides the bridge wire in the ratio 3:2. If the length of the resistance wire is 1.5m, then find the length of 1Ω of the resistance wire.

If the length of a wire is doubled and cross-sectional area is halved, what happens to the resistance?

In a metre bridge, the balancing length from the left end is 20 cm. The resistance in the right gap is 1 Omega . The value of the unknown resistance is

A copper wire has diameter 0.5 mm and resistivity of 1.6 xx 10^-8Omega m. What will be the length of this wire to make its resistance 10Omega ? How much does the resistance change if the diameter is doubled?

From a point P,the length of the tangent to a circle is 15 cm and distance of P from the centre of the circle is 17 cm . Find the radius of the circle.

A potentiometer wire of length 100 cm has a resistance of 10 ohm. It is connected in series with a resistance and a battery of emf 2V and of negligible internal resistance. A source of emf 10mV is balanced against a length of 40 cm of the potentiometer wire. What is the value of the external resistance?

The length of a tangent from a point A at distance 5 cm from the centre of the circle is 4 cm.Find the radius of the circle.

The bQB of a pendulum is released from a horizontal position. If the length of the pendulum is 1.5 m, what is the speed with which the bQB arrives at the lowermost point, given that it dissipated 5% of its initial energy against air resistance?