In a balanced wheat stone bridge, current in the galvanometer is zero. If remains zero when-
`(1)` battery emf is increased
`(2)` all resistance are increased by `10`ohms
`(3)` all resistance are made five times
`(4)` the battery and the galvanometer are intercharged

If the current sensitivity of a moving coil galvanometer is increased by 20% , its resistance also increased by 1.5 times. How will the voltage sensitivity of the galvanometer by affected?

Figure shows a balanced Wheatstone's bridge (1) If P is slightly increased, the current in the galvanometer flow from A to C. (2) If P is slightly increased, the current in the galvanometer flows C to A. (3) If Q is slightly increased, the current in the galvanometer flows from C to A. (4) If Q is slightly increased, the current in the galvanometer flows from A to C.

If the current sensitivity of a moving coil galvanometer is increased by 20%, it resistance also increases by 1.5 times. How will the voltage sensitivity of the galvanometer be affected?

If the current current sensitivity of a moving coil galvanometer is increased by 20% , its resistance also increases by 1*5 times. How will the voltage sensitivity of the galvanometer be affected?

An ohm meter measures the resistance placed between its leads. This resistance reading is indicated by a galvanometer that operates on current. The ohm meter has an internal source of voltage to create the necessary current to operate the galvanometer and also has approproate resistor to allow just right amount of current through galvanometer. A simple ohm meter is shown here. When there is an infinite resistance, there is zero current through galvanometer and it points in middle. If the test leads of this meter are directly shorted, (zero resistance) galvanometer will give full deflection. Galvanometer specification Resistance of galvanometer = 100 Omega Fullscale current = 0.5 mA Total number of division =40 .

When a resistance of 2 ohm is placed across a battery the current is 1 A and when the resistance across the terminals is 17 ohm, the current is 0.25A. The emf of the battery is

A galvanometer, together with an unknown resistance in series, is connected across two identical batteries of each 1.5 V . When the batteries are connected in series,the galvanometer records a current of 1 A , and when the batteries are connected in parallel, the current is 0.6 A . In this case, the internal resistance of the battery is 1//'**' Omega . What is the value of '**'?

When a battery of emf 2 V is directly connected to a galvanometer of resistance 100 Omega . It shows full scale deflection. To measure 1 A current , the shunt must be