Subject: Physics, asked 14 hours, 50 minutes ago

## Experts please answer... Question 1 Draw a circuit diagram showing a cell, a bulb and a closed switch. Question 2 ??????????????a)??How much work is done in moving a charge of 3 coulumb from a point at the volts 115 to a point at 125 volts? ??????????????b)??Ammeter burns out when connected in parallel. Give reasons. Question 3 Given n resistors each of resistors Rs. How will you combine them to get the (i) maximum and (ii) minimum effective resistance? What is the ratio of the maximum to minimum resistance? Question 4 a) A wire of length L and resistance R is stretched so that its length it?s doubled. How will the: (a) Resistance change(b) Resistivity change? ??????????????b)??In an experiment the current flowing through a resistor and potential difference across it are measured. The values are given below. Show that these values confirm Ohm?s Law ??????????????I (ampere) 1.0 1.0 2 1.5 2.0 2.0 2.5 2.5 3.0 3.0 ??????????????V (volt) 4.0 4.0 6.0 6.0 8.0 8.0 10.0 10.0 12.0 12.0 Question 5 a) A tube light draws 0.1 A current from a 220 V supply. What current will this tube light draw when it is connected to a 110 V supply? b) An electric wire is stretched to increase its length by 25%.By what % will the resistance be increased and what will be increase in its resistivity? Thank you so much! :)

Subject: Physics, asked 19 hours, 52 minutes ago

## Please solve this question experts...

Subject: Physics, asked 1 day, 11 hours ago

## Draw diagrams to show magnetic field lines around a current carrying #(a) straight conductor (b) solenoid

Subject: Physics, asked 1 day, 12 hours ago

## Experts please answer... (a) The electric power consumed by a device may be calculated by using either of the two expressions P = 12R or P =V2/R . The first expression indicates that it is directly proportional to R whereas the second expression indicates inverse proportionality. How can the seemingly different dependence of P on R in these expressions be explained? (b)??(i) A 100 W electric bulb is connected to 220 V mains power supply. Calculate the strength of the electric current passing through the bulb. (ii) If the same bulb is taken to U.S.A where the main power supply is 110 V, how much electric current will pass through the bulb when connected to mains? Thank you! :)

Subject: Physics, asked 1 day, 14 hours ago

## What is the power of a convex mirror whose focal length is 25 cm?

Subject: Physics, asked 1 day, 16 hours ago

## Is 9.8 ? 10^-12 coulomb charge is possible on a body?

Subject: Physics, asked 1 day, 20 hours ago

## Why the class is not started it's already 1:51

Subject: Physics, asked 1 day, 22 hours ago

## In the given circuit diagram , the cell and ammeter, both have negligible resistance. The resistances are identical. With the switch 'k' open, the ammeter reads 0.6A. What will be the ammeter reading when the switch is closed?

Subject: Physics, asked 1 day, 22 hours ago

## 3 cylindrical copper conductors having length L , 2L and L/2 respectively have their face areas A, A/2 and 2A respectively are given. Which of the conductors willhave the highest resistance and why? Compare their resistivity.

Subject: Physics, asked 2 days, 2 hours ago

## After what time a ball thrown at an inclination 'a' with speed 'u' , will appear to be at inclination 'b' as observed from the point of throw

Subject: Physics, asked 2 days, 3 hours ago

## Two shots are fired from the top and bottom of a vertical tower of height h , with inclinations 'a' and 'b' respectively . If the shots collide at some point on the ground , find the distance between this point and the foot of the tower

Subject: Physics, asked 2 days, 3 hours ago

## At what angle a gun should be inclined , so as to hit an object flying at a constant height 'h' and a uniform velocity 'u' . The shot is fired when the object was directly overhead the gun and it is required that the shot velocity is the least . what is the velocity ??

Subject: Physics, asked 2 days, 12 hours ago

## If resistance is 8r and volt is 48v then how many e charge in five seconds ?

Subject: Physics, asked 3 days, 3 hours ago

## A boat is moving with velocity v1 directly away from a gun mounted on the shore . A shell fired with a velocity v2 hits the boat at an elevation 'a' . How far is the gun from the boat when the shell was fired ??

Subject: Physics, asked 3 days, 13 hours ago

## How R1 and R2 equal?

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