alleryThree point charges +1, −3, and +5 (in arbitrary units) are placed in a closed system. What is the total charge of the system?
A+9 units
B+1 unit
C+3 units
D+5 units
Answer & Solution
Correct answer: C. +3 units
Charges are scalars that add algebraically (with sign): (+1) + (−3) + (+5) = +3. This is the additivity of charge property.
Keep practising Wave Optics
Browse all Wave Optics questions for ISC Class 12, or explore more Physics topics.
Related questions
Match each idea to its scientistPolarisation of light is direct experimental evidence that light is a:The motional EMF induced in a conductor of length $\ell$ moving with velocity $v$ perpendiThe resolving power (RP) of a diffraction grating with N slits in the m-th order is:In Young's double-slit experiment, the fringe width β is given by:In Young's experiment, a BRIGHT fringe (constructive interference) requires path differencIn single-slit diffraction, the central maximum is:BREWSTER'S LAW for the polarising angle θ_B relates to the refractive index n as: