MCQ
Find the value of $I$ ?................ $\mathrm{A}$
- A$-1.4$
- ✓$-2.1$
- C$2$
- D$-4.2$
✓
Answer
Correct option: B.
$-2.1$
b
in loop $\mathrm{ABEFA}$
in loop $\mathrm{ABEFA}$
$I_{1}=\frac{8}{5} \,A=1.6 \,A$
in loop $\mathrm{BCDEB}$
$I_{1}=\frac{3}{6}=0.5 \mathrm{\,A}$
$\mathrm{I}=-\left(\mathrm{I}_{1}+\mathrm{I}_{2}\right)$
$\mathrm{I}=-2.1 \mathrm{\,A}$
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
A strong magnetic field is applied on a stationary electron, then
In nuclear fission the percentage of mass converted into energy is about
Current is flowing in two parallel good conducting wires in the same direction. They will
A total charge Q is broken in two parts $Q_1$ and $Q_2$ and they are placed at a distance R from each other. The maximum force of repulsion between them will occur, when
→When water droplets merge to form a bigger drop:
A ray is reflected in turn by three plain mirrors mutually at right angles to each other. The angle between the incident and the reflected rays is......$^o$
→Electric lines of force:
Two identical capacitors A and B are charged to the same potential V and are connected in two circuits at t = 0 as shown in figure. The charges on the capahltors at a time t = CR are, respectively:
What is the current through an ideal $P-N$ junction diode shown in figure below.....$mA$
→The electromotive force of a primary cell is $2\, volts$. When it is short-circuited it gives a current of $4$ amperes. Its internal resistance in $ohms$ is
→