Embibe Experts Solutions for Chapter: Current Electricity, Exercise 1: TS EAMCET - 10 August 2021 Shift 1

An ideal ammeter is connected to a battery as shown in the figure. The currents through the $5.0 \mathrm{\Omega }$ resistor and the $2.0 \mathrm{\Omega }$ resistor are, respectively

Drift velocity of electrons in a wire of a certain length and the circular cross-section is, $V_{d.}$. The potential difference across the wire and the wire length is doubled but, the radius of the cross-section is halved. What is the new drift speed?

The drift velocity of electrons in a conducting medium is due to

A resistor connected to a battery is heated due to the current in the circuit. Which of the following quantities do not change, assuming the potential difference across the resistor is constant?

When operated at $240 \mathrm{V}$, a current of $10 \mathrm{A}$ was seen flowing through a heating wire and it's temperature reaches to $1000 °\mathrm{C}$. If the temperature coefficient of the wire is $1\times {10}^{-3} °{\mathrm{C}}^{-1}$. Its resistance at a temperature of $0 °\mathrm{C}$ is

$ADC$ source with internal resistance $R_0$ is connected to circuit as shown in the figure. The value of $R$ for which the power generated in the circuit is the maximum is

A light bull is rated at $110 \mathrm{W}$ for a $220 \mathrm{V}$ supply. The resistance of the bulb is

The current passing through the $AB$ branch of the circuit shown in the figure is: