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(B) $(1)$ Work done $W = qV$. Since $1 	ext{ volt} 	imes 1 	ext{ coulomb} = 1 	ext{ joule}$,statement $(1)$ is correct.$(2)$ Power $P = VI$. Since

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$(1)$,$(2)$ and $(4)$ are correct

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(B) $(1)$ Work done $W = qV$. Since $1 	ext{ volt} 	imes 1 	ext{ coulomb} = 1 	ext{ joule}$,statement $(1)$ is correct.$(2)$ Power $P = VI$. Since $1 	ext{ volt} 	imes 1 	ext{ ampere} = 1 	ext{ watt} = 1 	ext{ joule/second}$,statement $(2)$ is correct.$(3)$ $1 	ext{ volt} 	imes 1 	ext{ watt} = 1 	ext{ volt-watt}$,which is not a unit of horsepower. Horsepower is a unit of power $(746 	ext{ W})$,not a product of voltage and power. Thus,statement $(3)$ is incorrect.$(4)$ Both watt-hour and electron volt are units of energy. Therefore,a watt-hour can be expressed in terms of electron volts. Statement $(4)$ is correct.Hence,statements $(1)$,$(2)$,and $(4)$ are correct.

Identify the correctness of the following statements:
$(1)$ The product of a volt and a coulomb is a joule.
$(2)$ The product of a volt and an ampere is a joule/second.
$(3)$ The product of a volt and a watt is a horsepower.
$(4)$ $A$ watt-hour can be measured in terms of an electron volt.

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Identify the correctness of the following statements:$(1)$ The product of a volt and a coulomb is a joule.$(2)$ The product of a volt and an ampere is a joule/second.$(3)$ The product of a volt and a watt is a horsepower.$(4)$ $A$ watt-hour can be measured in terms of an electron volt.