Question
Calculate the current drawn from the battery in the given network.
✓
Answer
$\text{R}_{\text{equivalent}} = 2\Omega$
$\text{I} = \frac{\text{V}}{\text{R}} = 2\it\text{A}.$
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
Is the vector sum of the unit vectors $\vec{\text{i}}$ and $\vec{\text{j}}$ unit vector? If no, can you multiply this sum by a scalar number to get a unit vector?
→If the nucleons of a nucleus are separated far apart from each other, the sum of masses of all these nucleons is larger than the mass of the nucleus. Where does this mass difference come from?
Give the characteristics of magnetic field lines.
A rigid wire consists of a semi-circular portion of radius R and two straight sections The wire is partially immersed in a perpendicular magnetic field B, as shown in the figure. Find the magnetic force on the wire if it carries a current i.
Find the electric force between two protons separated by a distance of 1 fermi (1 fermi = 10-15m). The protons in a nucleus remain at a separation of this order.
State the factor, which controls (i) wavelength of light and (ii) intensity of light, emitted by a LED.
A force F facts on a point charge placed on the axis of an electric dipole. If the distance of a point charge from the dipole is doubled, what will be the force on it? Explain the reason also.
A cylindrical capacitor is constructed using two coaxial cylinders of the same length 10cm and of radii 2mm and 4mm:
- Calculate the capacitance.
- Another capacitor of the same length is constructed with cylinders of radii 4mm and 8mm. Calculate the capacitance.
What will be the change in the resistance of wire of eureka if its radius is made half and length is made one-fourth?
A calorimeter is kept in a wooden box to insulate it thermally from the surroundings. Why is it necesaary?